Pr(Nd)-Fe-Co-Nb-Cu-Si-B系急冷薄帯並びにそれらのボンド磁石の磁気特性 Magnetic Properties of Melt-Spun Pr(Nd)-Fe-Co-Nb-Cu-Si-B System Ribbons and their Bonded Magnets

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Melt-spun ribbons of Pr-Fe-Co-Nb-Cu-Si-B system alloys were prepared by single roller rapid-quenching method. Effects of composition,wheel velocity and heat-treatment on magnetic properties were investigated. The optimum preparation conditions of compounds were as follows: composition Pr<sub>9</sub>Fe<sub>68.5</sub>Co<sub>10</sub>Nb<sub>1</sub>Cu<sub>0.5</sub>Si<sub>0.5</sub>B<sub>10.5</sub>; wheel velocity 12.5 m/s; heat-treatment 625 °C for 5 min. Magnetic properties obtained were (BH)<sub>max</sub> = 121.8 kJ/m<sup>3</sup>, J<sub>r</sub> = 0.90 T, H<sub>cJ</sub> = 898.7 kA/m, and H<sub>cB</sub> = 509.0 kA/m. Temperature coefficients of J<sub>r</sub> and H<sub>cJ</sub> of the ribbons of Pr<sub>9</sub>Fe<sub>68.5</sub>Co<sub>10</sub>Nb<sub>1</sub>Cu<sub>0.5</sub>Si<sub>0.5</sub>B<sub>10.5</sub> alloy were α(J<sub>r</sub>)<sub>ave</sub> = -0.034 %/°C and α(H<sub>cJ</sub>) = -0.290 %/°C, respectively. The value of (BH)<sub>max</sub> for the isotropic Pr<sub>9</sub>Fe<sub>68.5</sub>Co<sub>10</sub>Nb<sub>1</sub>Cu<sub>0.5</sub>Si<sub>0.5</sub>B<sub>10.5</sub> bonded magnet prepared by using ribbons annealed at 625 °C for 5 min is 84.4 kJ/m<sup>3</sup>. Irreversible loss of the bonded magnet is -2.74 % (at 125°C).

収録刊行物

  • 電気学会論文誌. A, 基礎・材料・共通部門誌 = The transactions of the Institute of Electrical Engineers of Japan. A, A publication of Fundamentals and Materials Society  

    電気学会論文誌. A, 基礎・材料・共通部門誌 = The transactions of the Institute of Electrical Engineers of Japan. A, A publication of Fundamentals and Materials Society 126(12), 1249-1254, 2006-12-01 

    The Institute of Electrical Engineers of Japan

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各種コード

  • NII論文ID(NAID)
    10018410810
  • NII書誌ID(NCID)
    AN10136312
  • 本文言語コード
    JPN
  • 資料種別
    ART
  • ISSN
    03854205
  • NDL 記事登録ID
    8592825
  • NDL 雑誌分類
    ZN31(科学技術--電気工学・電気機械工業)
  • NDL 請求記号
    Z16-793
  • データ提供元
    CJP書誌  NDL  J-STAGE 
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